Acoustic Artifacts; Guidelines For Reducing Mi And Ti - FujiFilm SonoSite X-Porte User Manual

Acoustic artifacts

An acoustic artifact is information, present or absent in an image, that does not properly indicate the structure
or flow being imaged. There are helpful artifacts that aid in diagnosis and those that hinder proper
interpretation. Examples of artifacts include shadowing, through transmission, aliasing, reverberations, and
comet tails.
For more information on detecting and interpreting acoustic artifacts, see the following reference:
Kremkau, Frederick W. Diagnostic Ultrasound: Principles and Instruments. 7th ed., W.B. Saunders
Company, (Oct. 17, 2005).

Guidelines for reducing MI and TI

The following are general guidelines for reducing MI or TI. If multiple parameters are given, the best results
may be achieved by minimizing these parameters simultaneously. In some modes, changing these
parameters does not affect MI or TI. Changes to other parameters may also result in MI and TI reductions.
Please note the MI and TI values on the screen. For a visual representation, see
page 2-6.
Note
Table 10-1: Guidelines for reducing MI
Transducer
C11xp
C35xp
C60xp
HFL38xp
Decrease or lower setting of parameter to reduce MI.
Increase or raise setting of parameter to reduce MI.
Acoustic output
For guidelines for reducing MI or TI for the TEExp transducer, refer to the TEExp
Transducer User Guide, included with the TEExp transducer.
Depth
"Clinical monitor" on
10-3